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Keystone Watch Case Co.
Keystone Watch Case Co.
Keystone Coin Silver
Keystone Watch Case Co. Keystone Coin Silver
![Watch Case Marking for Keystone Watch Case Co. Keystone Coin Silver: Keystone
Coin
C [in Keystone Block]](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Coin-2.jpg)
Note: Case manufacturers modified markings over time. As a result, the image above is simply a representation of one particular marking used by the company. Your case marking may differ based on the production era and other parameters.
Keystone Coin Silver
Find Keystone Coin Silver Cases For Sale on eBay See What Other Keystone Coin Silver Cases Have Sold For on eBay![Watch Case Marking Variant for Keystone Watch Case Co. Keystone Coin Silver: Keystone
Coin
C [in Keystone Block]](https://pocketwatchdatabase.com/assets/images/cases/Keystone-CoinSilver.jpg)
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5 Admirations
| Serial No.: | #768590 |
| Manufacturer: | Waltham |
| Grade: | Wm. Ellery |
| Size: | 18s |
| Model: | 1857 |
| Jewels: | 11j |
| Setting: | Key |
| Finish: | Gilt |
| Est. Date: | October 1874 - December 1, 1874 |
| Case Model: | Leader |
| Case Material: | Coinsilver |
| Added By: |  winterwolf |
2 Admirations
| Serial No.: | #25795 |
| Manufacturer: | Hamilton |
| Grade: | 931 |
| Size: | 18s |
| Model: | 2 |
| Jewels: | 16j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1897 |
| Case Model: | Century |
| Case Material: | Silver |
| Added By: | winterwolf |
3 Admirations
| Serial No.: | #4C39665 |
| Manufacturer: | Hamilton |
| Grade: | 4992b |
| Size: | 16s |
| Model: | 5 |
| Jewels: | 22j |
| Setting: | Pendant |
| Finish: | Nickel |
| Est. Date: | 1941 |
| Case Material: | Coinsilver |
| Case Serial: | K018578 |
| Added By: |  orsogrigio |
8 Admirations
| Serial No.: | #359623 |
| Manufacturer: | Illinois |
| Grade: | Columbia |
| Size: | 18s |
| Model: | 1 |
| Jewels: | 11j |
| Setting: | Key |
| Finish: | Gilt |
| Est. Date: | December 1881 - May 1882 |
| Case Material: | Coinsilver |
| Case Serial: | 34446 |
| Added By: |  esoxhunter |
5 Admirations
| Serial No.: | #153396 |
| Manufacturer: | Hampden |
| Grade: | No. 71 |
| Size: | 18s |
| Model: | 1 |
| Jewels: | 15j |
| Setting: | Key |
| Finish: | Gilt |
| Est. Date: | 1880 |
| Case Material: | Coinsilver |
| Case Serial: | 38546 |
| Added By: |  Rickhufnagel7 |
6 Admirations
| Serial No.: | #258398 |
| Manufacturer: | Hamilton |
| Grade: | 924 |
| Size: | 18s |
| Model: | 1 |
| Jewels: | 17j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1903 |
| Case Model: | Plain 4oz coin |
| Case Material: | Coinsilver |
| Case Serial: | 39894 |
| Added By: |  WIZARDofWARLOCK |